B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
154/140, 400/657
B32B 27/32 (2006.01) C08L 23/10 (2006.01) C08L 23/16 (2006.01) C09J 123/10 (2006.01) C09J 123/16 (2006.01)
Patent
CA 1266817
Abstract of the Disclosure: A laminated structure comprising a substrate layer of a crystalline propylene resin and, positioned in direct contact with at least one surface of said substrate layer, a heat-sealable layer of a crystalline random propylene co- polymer composition, wherein the crystalline random propyl- ene copolymer composition is a mixture composed of (I) a crystalline random propylene copolymer of a major amount of propylene with a minor amount of another alpha-olefin, and (II) a random copolymer consisting essentially of more than 60 to 99 mole% of 1-butene and less than 40 to 1 mole% of propylene, the weight ratio of (I)/(II) being from 5/95 to 90/10, and the random copolymer (II) has (A) an intrinsic viscosity [n], determined in decalin at 135°C, of 0.5 to 6 dl/g, (B) a DSC melting point (Tm), measured by a di- fferential scanning calorimeter, of 50 to 130°C, (C) a degree of crystallinity, measured by X-ray diffractometry, of 5 to 60%, (D) a boiling methyl acetate-soluble content (W1) of not more than 2% by weight based on the weight of the copolymer (II), and (E) an n-decane/acetone (1:1 by volume) mixture- soluble content (W2) of less than 4 x [n]-1.2 in% by weight based on the weight of the copolymer (II); and a crystalline random propylene copolymer composition used for the said laminated structure.
494221
Fukui Kunisuke
Kashiwa Norio
Kohyama Masaki
Muranaka Takeshi
Mitsui Chemicals Incorporated
Smart & Biggar
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